Describe the bug
Apon adding Sophisticated Backpacks to my modpack one of my members noted that you can dupe using the bundle from another mod called "Corail Tombstone" attached is a video demonstrating how it is done

To Reproduce
Steps to reproduce the behavior:

1. Open backpack with stack upgrade
2. stack Empty Enchanted bundles from mod Corail Tombstone
3. place item that you want to dup into the stack of bundles
4. then remove the bags individually and remove the duped items

Screenshots
how about a viedo?
https://youtu.be/Uk6ehhf_29k

Versions
Minecraft 1.18.2, mod ver's 3.18.13.666

that bundle just needs to be added to nonStackableItemsList in the config